Home / 121,974.81-168,342.85-70,282.01

Finding the Fourth Proportional to 121,974.81, 168,342.85 and 70,282.01

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Solution

The fourth proportional to 121,974.81, 168,342.85 and 70,282.01 is: 96,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,974.81 : 168,342.85 = 70,282.01 : x
  2. Step 2: Convert to fraction form
    121,974.81/168,342.85 = 70,282.01/x
  3. Step 3: Cross multiply
    121,974.81x = 168,342.85 × 70,282.01
  4. Step 4: Simplify right side
    121,974.81x = 11,831,474,112.28
  5. Step 5: Solve for x
    x = 11,831,474,112.28/121,974.81
  6. Step 6: Final answer
    x = 96,999.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.